code: def test_FSLCommand():
      # Most methods in FSLCommand are tested in the subclasses.  Only
      # testing the one item that is not.
      cmd = fsl.FSLCommand(command="ls")
      res = cmd.run()
      assert type(res) == InterfaceResult
  
file_path: nipype/nipype/interfaces/fsl/tests/test_base.py
imports: import os
  import nipype.interfaces.fsl
  from nipype.interfaces.base import InterfaceResult
  from nipype.interfaces.fsl import check_fsl, no_fsl
  import pytest
label_desc: Use image node_id 4 for calling a global function with example usage: test_FSLCommand() without return types